Archived posting to the Leica Users Group, 2001/03/21

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Subject: [Leica] Do Blades Matter?
From: Buzz Hausner <>
Date: Wed, 21 Mar 2001 09:21:41 -0500

Based on Steve's comments and my own observations regarding the spherical
and aspherical 35 Summicrons, I would be interested in learning the number
of diaphragm blades in the spherical and aspherical 35 Summiluxes.  I have
neither lens, can anybody out there help?


- -----Original Message-----
From: Steve LeHuray []
Sent: Wednesday, March 21, 2001 8:32 AM
Subject: Re: [Leica] Re: 35mm M Summicron ASPH lens-flare

> John...
>  There are some very good reasons, in addition to savings, for buying
> the pre-aspheric 35 Summicron.  I own and use both the aspherical (second
> version) and spherical (vintage '86) lenses.  I use the spherical
> more often.  This is because I value small, light equipment and an M6 with
> the spherical will easily slip into a jacket pocket.  I do not want to
> ignite a bokeh war, but I like the over-all look of the spherical better
> many pictures...perhaps this is because the spherical has a dozen
> blades and the aspherical two fewer, but the images are different to my
> Who knows?  Even at f2.0, the spherical is very sharp...sharper at least
> than my shaky hands deserve.  Don't get me wrong, the aspherical is a fine
> lens...certainly snappier than the spherical at f2.0.  Flare?  Flare is so
> rarely an issue that I don't worry about it unless I WANT to use flare as
> element of the photograph.
>  Nota bene, I am not a collector, just the father of two who will let
> my kids fight this battle for many years after I am gone.  My son and
> daughter will be posting their opinions on the two lenses in about twenty
> years.
>  Buzz Hausner

I am right there with you Buss. My poison of choice in a 35 is the pre-asph
Summilux 1.4. It is a tiny little thing which I like and to my eye it seems
to do very well wide open plus it has a smoother look at all apertures
compared to the asph version.